Software Gigs

Senior back-end engineer to own and re-architect the payment-terminal platform powering restaurant kiosks, currently spanning 40+ integrations across card-present terminals, processors, and cash automation. You will design a modular, pluggable SDK enabling internal and external developers to build integrations against a stable contract, implement new integrations from wire-level protocols (TLV, BMP, APDU, BCD/LLVAR) up through high-level APIs, and establish platform-wide patterns for payment correctness (idempotency, transaction recovery, reconciliation). Role requires 6+ years back-end engineering with strong Java, Spring, OOP, and distributed-systems design; hands-on work with serial (RS-232/USB-serial via jssc) and USB (usb4java) transports, REST/SOAP/webhook integrations, and PCI-DSS compliance patterns.

Senior Firmware Engineer role focused on developing and optimizing low-level embedded software in C++ for flight-critical avionics and unmanned aerial systems (UAS). You will port frameworks to new RTOSes and hardware platforms, create Board Support Packages and Hardware Abstraction Layers for ARM Cortex-M architectures, develop peripheral drivers (I2C, SPI, UART, ADC, wireless), and conduct unit/integration testing including MISRA C compliance checks. You'll diagnose cross-domain issues across electromechanical, software, networking, and RF subsystems, and translate mission requirements into technical specifications and test documentation.

Lead the design, architecture, and development of native Windows desktop applications using Windows App SDK, WinUI, C#, XAML, and C++. Define best practices for Windows development, drive accessibility efforts across Microsoft UI Automation frameworks, and take full ownership of feature lifecycles from conception through maintenance. Collaborate with product designers, UX researchers, and QA to shape the Windows platform roadmap. Diagnose and resolve complex bugs, performance bottlenecks, memory leaks, and compatibility issues while mentoring other engineers and conducting code reviews.

Design, develop, customize, and maintain websites built on the .NET framework in an AWS cloud environment. Gather requirements from users, write unit and integration tests, troubleshoot system-level issues independently, and create technical documentation. Requires 3+ years of web development experience with .NET, C#, JavaScript, WebAPI.NET, HTML, CSS, GitHub, IIS, SQL/MySQL, and AWS services including Glue Jobs and S3.

Join Axos Bank's Data Engineer Rotational Program as a first-career technologist gaining multi-platform exposure in data engineering. You will focus on SQL-based solutions, creating SSIS packages for data transformation, writing and maintaining SQL jobs and stored procedures, and performing data quality validation and testing. Through rotations across database development, data quality, and business intelligence reporting, you'll develop enterprise-level solutions while working with cross-functional teams on Salesforce, Marketing Cloud, and omnichannel platforms. The role requires a bachelor's degree in IT, Computer Science, or related field, with basic to intermediate SQL Server knowledge.

HII Mission Technologies seeks a mid-level Software Engineer to develop and integrate software for unmanned underwater vehicles, distributed maritime communications, and tactical situational awareness systems. You will design, develop, and test C# applications, build plug-ins for WinTAK, ATAK, and TAK Server, and support MK18 family systems including Hydroid VIP, Neptune, and Coin Nexus. You'll collaborate with cross-functional teams on lab and fleet testing, troubleshoot performance in distributed environments, and contribute to integration testing, validation, verification, and program documentation. The role requires a Secret security clearance and offers a hybrid schedule with 1–2 days onsite per week.